HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

If you are using HP 3PAR Remote Copy Software, you can optionally promote the virtual copy if
the base volume is in a Remote Copy group. See the HP 3PAR InForm OS Command Line Interface
Reference for detailed information about the promotesv command. For details about Remote
Copy, see the HP 3PAR Remote Copy Software User's Guide.
Modifying a Virtual Copy
Any existing virtual copy can be modified to have a new name, new allocation warnings and
limits, and adhere to new policies. To modify an existing VV, issue the setvv command. For
details on all of the setvv command arguments and their usage, refer to the HP 3PAR InForm OS
Command Line Interface Reference.
Removing a Virtual Copy
• To remove a virtual copy, issue the removevv <VV_name> command, where <VV_name>
is the snapshot you are removing.
See the HP 3PAR InForm OS Command Line Interface Reference for detailed information about
the removevv command.
Creating a Group of Virtual Copies
The InForm OS CLI also allows for the creation of consistent group snapshots of a list of virtual
volumes. A maximum group size of 100 virtual volumes is recommended for making a group of
virtual copies.
• To create group snapshots, issue the creategroupsv <copy_of_VV> command, where
<copy_of_VV> is the name of the virtual volume being copied.
NOTE: If you wish to copy multiple volumes, the <copy_of_VV> argument can be repeated
multiple times on the command line for a single instance of the creategroupsv command.
For a complete list of options available for the creategroupsv command, see the HP 3PAR
InForm OS Command Line Interface Reference and InForm OS CLI Help.
Physical Copies
A physical copy duplicates all the data from a base volume to a destination volume. The base
volume is the original volume that is copied to the destination volume. The physical copy on the
destination volume becomes available if the original base volume becomes unavailable. Unlike a
virtual copy or snapshot, a physical copy maintains the performance of the base virtual volume.
Creating physical copies does not require a separate license.
The maximum number of physical copies that can be created on a system is determined by the
system configuration. For the maximum number of physical copies that can be created with your
specific system configuration, go to the Single Point of Connectivity Knowledge (SPOCK) website
http://spock.corp.hp.com/index.aspx.
A physical copy can only be made from a volume with enough free space to accommodate writes
to that volume during the physical copy operation. In addition, the destination volume must meet
the following conditions:
• It must have snapshot space associated with.
• It must have at least as much user space as the volume being copied.
• It must not be exported to a host.
102 Managing Virtual Volume Copies